Glass Aquarium Question

ok I'm looking at building a glass aquarium L36" x W24" x H18" been told 6mm glass will be fine if I Euro brace around the top with 6mm x 2" is this going to be ok or should I go thicker glass like 8mm, not concerned about the look of bracing, just its a huge difference in glass cost where I am in Australia only one glass shop here in my town, any info you have to offer would be great

As for the bottom, if you put the tank on a fully support solid top (like 3/4" plywood) stand with a thin layer of foam (yoga mat) you could get away with the same thickness glass, but if you (and any future owner) plans to not have the tank mounted on a fully supported solid top stand then, bump the bottom thickness up...